Gen Chem 2 Final Exam (ANSWERED) CORRECTLY TO SCORE A+

Gen Chem 2 Final Exam (ANSWERED)
CORRECTLY TO SCORE A+
Which species has london dispersion forces as the only
intermolecular force?
A. CH3CH2OH
B. Ar
C. NH3
D. HBr
E. H2O - Correct Answers ✅D. Ar


As a pure substance, which of the following could experience
dipole-dipole interactions?
I. CO₂
II. HCl
III. CCl₄
A. I AND II only
B. I AND III ONLY
C. II AND III ONLY
D. I, II, III
E. none - Correct Answers ✅A. I and II only


Which of the following is expected to have the highest boiling
point?
A. CH4
B. CH3Cl

,Gen Chem 2 Final Exam (ANSWERED)
CORRECTLY TO SCORE A+
C.CH3OH
D. C2H6
E. C2H4 - Correct Answers ✅C. CH3OH (higher IMF, higher
boiling point)


Which is expected to have the highest heat of vaporization?
A. CH4
B. SiH4
C. NH3
D. PH3
E. H2O - Correct Answers ✅E. H2O (higher IMF, higher heat
of vapor)


Rank the following compounds in order of lowest boiling point
to highest boiling point based on intermolecular forces
A. HF<HCl<HBr<HI
B. HI<HBr<HCl<HF
C. HCl<HBr<HI<HF
D. HBr<HI<HF<HCl
E. HBr<HF<HI<HCl - Correct Answers ✅C.
HCl<HBr<HI<HF


Which quantity is not determined from a heating or cooling
curve for a substance?

, Gen Chem 2 Final Exam (ANSWERED)
CORRECTLY TO SCORE A+
A. boiling point
B. heat of vaporization
C. triple point
D. melting point
E. heat of fusion - Correct Answers ✅C. triple point


Which of the following substances would have the highest
vapor pressure at 298K?
A. propanol (bp = 97C)
B. acetone (bp = 56C)
C. water (bp = 100C)
D. benzene (bp = 80C)
E. chloroform (bp = 61C) - Correct Answers ✅B. acetone
(56C); lower boiling point = lower IMF, higher vapor pressure


In general, the vapor pressure of a substance increases as
__________ increases.
A. surface tension
B. molecular weight
C. hydrogen bonding
D. viscosity
E. temperature - Correct Answers ✅E. temperature